Samuel fiske



(N 0' Model.)

s. PISKE.

STEAM GENERATOR- No. 326,552. Patented Sept. 22,-1885.

NVENTOR WITNESSES:

ATTORNEY N. PETERS. PhnlvLitMgnphcr, Washmglun. E C

UNITED STATES PATENT OFFICE.

, SAMUELFISKE, on NEW YORK, N. Y.

STEAM-GENERATO R.

SPECIFICATION forming part of Letters Patent No. 326,552, datedSeptember 22, 1885.

Application filed May 25, 1885. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL FIsKE, a citizen of the United States ofNorth America, and a resident of the city, county, and State of NewYork, have invented a new and useful Improvement in Steam Generators, ofwhich the following is a specification.

This invention relates to steam-generators that are designed moreespecially for heating buildings.

The objects of the invention are to secure durability, economy inconstruction and fuel, and convenience in operating; and the inventionconsists of certain details of construction whereby the largest amountof boiler-surface may be exposed to the heat from thecombusgion-chamber, whereby the steam may be made Reference is to be hadto the accompanying drawings, forming part of this specification,wherein the letters of reference indicate corresponding parts in allthefigures.

Figure 1 is a front elevation of the apparatus. Fig. 2 is apartly-sectional elevation of the same with parts broken away to exhibitother parts. Fig. 3 is a sectional plan on line a at, Fig. 2.

In the drawings, A represents the base of the heater, provided withdoors A, and supporting the grate B above the ash-pit B.

The main part of the boiler 0, supported on the base A, has a doubleshell, a a, inclosing an annular water-space, b, which surrounds thecombustion-chamber D. The bottom of the water-space b is closed by rings(2, to which the lower edges of the said shells are riveted, as shown atd.

A door, E, in one side of the boiler affords access to thecombustion-chamber for feeding fuel thereto.

A large cylindrical water-drum, F, open at the top and havingwater-connection with the water-space b, and suitably secured to the'upper edge of the inner boiler-shell, a, projects centrally down intothe combustionchamber D, thereby making the upper portion of saidchamber annular, as indicated in Figs. 2 and 3.

The outer boiler-shell, a, extends above the inner shell, a, and hassecured to it by rivets f a flanged cylindrical drum, G, which forms thetop of the boiler and also the steamchamber thereof, and inserted in thetop of the drum G is a steam-exit pipe, g, that is designed to beprovided with a suitable valve. The internal diameter of the steam-drumG is preferably the same as that of the water-drum F, and its annularbottom flange, h, extends horizontally outward and is turned down to fitwithin and against the boiler-shell a, as shown in Fig. 2.

Surrounding the drum G is a flanged shell, H, which is riveted to thehorizontal flange of the drum G, as shown at k, and forms an annularspace, H, about said drum.

A ring of short flues, m, extending upward between the water-space b andthe drum F, affords escape for the unabsorbed heat and products ofcombustion from the combustionchamber D into the shell H to dry thesteam in the steam-drum G, and finally the products of combustion escapefrom the steam-drying chamber H through a pipe, 0, provided with a valveor damper, 0, for regulating the draft.

' Some of the advantages of a steam-generator of this construction areits cheapness, simplicity, strength, and durability, and that it affordsan unusually large combustion-chamber in proportion to its size, andexposes avery large water-heating surface, and also utilizes to greatadvantage for steam-drying the heat escaping from thecombustion-chamber.

I attach importance to the shell H, surrounding the steam-drum andforming an annular space, H, around said drum, for by this constructionthe steam is dried in the steamchamber, the heat from thecombustion-chamber being utilized for this purpose.

I am aware of English patents Nos. 401 of 0 1865 and 1,561 of 1853, andthe constructions therein set forth are not sought to be covered in thisapplication.

WVhat I claim as new is The combination, with the outer shell, a, andshell H, as shown, of the inner shell, a, arranged in relation to theouter shell to form water-leg b, and having a central dependingwater-space projecting in the center of the combustion chamber, theflanged drum 0,

formingasuperheating-chamber,and arranged In testimony that I claim theforegoing as in relation to the. shell H to form a heatingmy invention Ihave signed mynamc, in pres- 1o chamber, which receives the arisingproducts ence of two witnesses, this 22d day of April,

of combustion and surrounds the drum G on 1885.

5 all sides and the top, and the short tubes m, SAMUEL FISKE.

connecting the chambers D H, and projecting Witnesses: through thewater-space, all arranged andop- H. O. WARMOTH,

crating as and for the purpose specified. E. W. LENNEKER.

